Mercurial > hg
view hgext/highlight/highlight.py @ 48875:6000f5b25c9b
py2: remove simple from __future__ statements
These were needed for Python 2 support. Now that our linter no longer
mandates these, we can start deleting them.
Differential Revision: https://phab.mercurial-scm.org/D12254
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Thu, 03 Mar 2022 17:34:00 +0100 |
parents | 856cce0c255c |
children | 5f22c92dcf3d |
line wrap: on
line source
# highlight.py - highlight extension implementation file # # Copyright 2007-2009 Adam Hupp <adam@hupp.org> and others # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. # # The original module was split in an interface and an implementation # file to defer pygments loading and speedup extension setup. from mercurial import demandimport demandimport.IGNORES.update([b'pkgutil', b'pkg_resources', b'__main__']) from mercurial import ( encoding, pycompat, ) from mercurial.utils import stringutil with demandimport.deactivated(): import pygments import pygments.formatters import pygments.lexers import pygments.plugin import pygments.util for unused in pygments.plugin.find_plugin_lexers(): pass highlight = pygments.highlight ClassNotFound = pygments.util.ClassNotFound guess_lexer = pygments.lexers.guess_lexer guess_lexer_for_filename = pygments.lexers.guess_lexer_for_filename TextLexer = pygments.lexers.TextLexer HtmlFormatter = pygments.formatters.HtmlFormatter SYNTAX_CSS = ( b'\n<link rel="stylesheet" href="{url}highlightcss" type="text/css" />' ) def pygmentize(field, fctx, style, tmpl, guessfilenameonly=False): # append a <link ...> to the syntax highlighting css tmpl.load(b'header') old_header = tmpl.cache[b'header'] if SYNTAX_CSS not in old_header: new_header = old_header + SYNTAX_CSS tmpl.cache[b'header'] = new_header text = fctx.data() if stringutil.binary(text): return # str.splitlines() != unicode.splitlines() because "reasons" for c in b"\x0c", b"\x1c", b"\x1d", b"\x1e": if c in text: text = text.replace(c, b'') # Pygments is best used with Unicode strings: # <http://pygments.org/docs/unicode/> text = text.decode(pycompat.sysstr(encoding.encoding), 'replace') # To get multi-line strings right, we can't format line-by-line try: path = pycompat.sysstr(fctx.path()) lexer = guess_lexer_for_filename(path, text[:1024], stripnl=False) except (ClassNotFound, ValueError): # guess_lexer will return a lexer if *any* lexer matches. There is # no way to specify a minimum match score. This can give a high rate of # false positives on files with an unknown filename pattern. if guessfilenameonly: return try: lexer = guess_lexer(text[:1024], stripnl=False) except (ClassNotFound, ValueError): # Don't highlight unknown files return # Don't highlight text files if isinstance(lexer, TextLexer): return formatter = HtmlFormatter(nowrap=True, style=pycompat.sysstr(style)) colorized = highlight(text, lexer, formatter) coloriter = ( s.encode(pycompat.sysstr(encoding.encoding), 'replace') for s in colorized.splitlines() ) tmpl._filters[b'colorize'] = lambda x: next(coloriter) oldl = tmpl.cache[field] newl = oldl.replace(b'line|escape', b'line|colorize') tmpl.cache[field] = newl